Ok... thank you for reply me first~~~
And i find the ILMerge-GUI software....
But i use this software combine import_excel.exe and MySql.Data.dll,
it show error, (There was a problem trying to merge. The output aseembly might not work as expected.
ILMerge.Merge: The assembly 'MySql.Data' was not merged in correctly. It is stil listed as an external
reference in the target assembly.)

How can i do ? Thank you ~~~